Dump-car door.



isf

UNITED j sTATEs PnTENT oEEIcE.

` DUMP-CAR Doon.

To all whom t may concern.'

Be it known that lRionAnn IVEn Bru'- NETT, a citizen of the United States of America, residing at No. 42 The Linton, Montreal, Province of Quebec, Dominion of Canada, have invented certain new and useful Improvements in Dump-Car Doors,lor1 which the following is a specification.

My invention rela-tes to dulnp car doors used in connection with cars in which the-` grain, ore cr coal is con- 'joint being constructed and arranged to tighten in proportion with the Said pressuse.

The invention further consists of an apron carried by the free end of the door and adapted to form an extension chute when the door is open and a 4sealed closure when closed.

A further object is to provide a continuous hinge to a door which increases the strength of the door and which prevents any leakage.

Hitherto it has been the practiceto hinge the doors of. dump cars/at the ends or at intervals along the door edge. With such a construction there has always been more or less leakage betw'een the door and frame at the hinge.

With my construction a continuous hinge extends along the entire edge of the door. This hinge is preferably constructed from the metal plates of which the door and its ramelare made, the adjoining edges of the door and the door frame being bent and the bent portions engaged. The result is a hinge with a, limited play but sealed for the whole .of its length. The bent portions moreover greatly strengthen the frame and the door. The apron is hinged to the door in a similar manner and as before mentioned provides an extension chute to thel door when open land. a sealed closure when the door is closed.

Specification of Letters Patent.

Application led December 14, 1910. Serial No. 597,183.

i Patented Nov. 25, 1913.

Reference is iliade to the/annexed dran"- ing in which: y

Figure lhshows ar perspective view of one form of hinge. (Fig. Q. shows a modified form of hinged-f Fig. 3. shows in section a dump car with; afliopper fitted with a door and apron as `ujiil be described below.

In Fig. 1. an idealiform of the hinge is shown. Ahrepresentsfthe frame or ioor The bent edge D, of the frame A, meshes with `the bent edge C, of the door B. In this form the bent portions appear in the shape ot spiral curves. As however the eonstructional difliculties of bending the edges of metal plates to true spiral curves are considerable, a modified form as shown in Fig` 2. can be employed and'this is of simple and easy construction.

Other modifications of the forni of the bends may be made without affecting the mode oi. operation.

In addition to the bends of the edges a flange N may be secured to either the door or the frame to limit the play of the hinge.

In Fig. 3. is shown the center sill H of a dump car with a hopper wall A resting on it. To this hopper wall A is hinged the door B which when closed assumes a horizontal position and when open forms a continuation of the slope of the hopper lWall A. A'To the edge F of the door'is hinged the edge G of the apron E which when drawn up by the closing mechanism L forms a sealed closure with the edge K of thc side sill J and when released forms an extension chute to the door B. 1

. It is to be specially noted that the apron E forms a sealed contact With the sill J as soon as they are drawn together by the chain M, and although the apron E has not been drawn entirely home. In this feature my invention overcomes a difficulty that has long existed in the closure of dump car doors.

In the ordinary construction of the hinges.

of these doors, the hinge is an element of Weakness in the structure. and increases the cost of maintenance. Whereas in the present device the hinge is an element of strength as it is equivalent to a flange or corrugation` and gives the door a continuous and unbroken support for its entire length. Moreover there are no loose parts or parts that may become loose, and the wear will not decrasse the etliciency but Willson the contrary-' I' made independently eiective form consisting of a chain hdpper door ubent edges,

lmalte the Contact surfaces more accurate and tighter fitting. .lt will also appear that with this ,device the greater the load the tighter will be the joints making a positive seal.

Inv the construction ot this devicel the usual side flanges to both door and apron will be provided. Stopsto limit the swing ot the door and apron will also be provided if necessary.

rl-'he means of closing the door and apron may be varied but I illustrate a simple and M adapt.- ed to wind on'4 a bar provided with a ratchet or clutch and a crank L1.

The improved hinge members may be of the door and frame and fastened thereto, within the scope of my invention.

Having now described my invention and its mode of operation what claim and de- `sire to secure by Let-ters Patent is 1. In a dump car afcentral sill, a hopper wall secured thereto, a hopper door hinged to the hopper wall by means of their intermeshing bentedges, an apron hinged to the by means of their intermeshing a side sill against which the apron rests when closed and means to open and close the hopper door and apron, as described.

2. In a dump car, a hopper door hinged to the hopper wall by means of their' intermeshing bent edges, an apron hinged to the hopper door by means of their intermeshing bent edges and means to open and close the apron :n.d -hopper door, as described.`

3. ln a dump car a hopper door, an apron hinged thereto by means of their intermesh ing bent edges, a sill against which the apron rests when closed, and means to open and closethe hopper door and apron as described. V

4. VIn a dump car a floor plate provided with an edge bent downwardly and Curved beneath the same, a door plate having an edge bent upwardly and curved tooverhang the same the said upwardly bent edge meshing with theI downwardly bent edge of the floor plate and forming therewith a continuous hinge forthe door as' described. i 5. In a 'edge bent downwardly and dump ear a hopper door hinged to.

the floor plate by means of their intermeshing bentA edgesand an apron hinged to the hopper door by means of their intermeshing bent edges as described.

G. ln a car the combination with a` floor plate one edge of which is bent downwardly and curved beneath the same, of a door plate oney edge ot which is bent upwardly and curved to overhang the same and adapted to engage and be support-ed by the curved edge of the floor plate.

7. In a ear, ay door frame, one side olf which forms a floor late, in combination with a. hopper door hinge consisting of the intermeshing upwardly curved `edge of the door .plate overhanging the same, and the downwardly eurved'edges of the adjacent floor plate, as described.

8. ln a ear for containing loose commodities the eombination'with al door frame, one side of which is formed by a door member, and a door, of a hinge extending Continu ously throughout the hinged edge thereot and consisting of a pair of members presenting engaging bent edges, one ot such members being upon the lioor and having one curved beneath the same, and the other upon the door and having one edge bent upwardly and curved to overhang the same.

9. The combination with the door frame of' a car for containing loose commodities one side of such frame consisting of a floor member and a door for such frame, of a. hinge extending continuously4 throughout the hinged edge thereof and consist-ing of a pair of members one upon the floor member and having one edgebent downwardly and curved beneath the same and the other upon the door and having one edge bent upwardly and curved to overhang the same theedges of such members engaging one another and constructed and arranged to tighten in proportion with the load sustained thereby.

Signed at Montreal thisgtwenty first day of November, 1910, in the presence of two witnesses.

HANBURY A. BonEN, M. E. E. HAIL. 

